Loose-leaf binder.



T. R. EDDY.

LOOSE LEAF BINDER.

APPLICATION FILED SEPT. 20, 1910.

Patented Feb. 28, 1911.

M/l/E/VTUR 771077705 ATTORNEY WASHINGTON, o 0.

n1: NDRRIS PETERS 1:04,

THOMAS R. EDDY, OF NEW YORK, N. Y., ASSIGNOR TO THE C. E. SHEPPARD CO.,OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

LOOSE-LEAF BINDER.

To all whom it may concern:

Be it known that I, THOMAS EDDY, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in Loose Leaf Binders,of which the following is a specification.

This invention relates to loose-leaf or temporary binders, particularlyof that class known as loose-leaf ledger binders, the object of theinvention being to provide an improved binder comparatively simple inconstruction and operation and inexpensive to manufacture, and whichwill be reinforced in an improved manner.

In the drawings accompanying and fornr. ing part of this specification,Figure 1 is a top view, partly broken away, of this improved loose-leafledger binder; Fig. 2 is a cross sectional view thereof taken in line22, Fig. 1, looking toward the end; Fig. 3 is a transverse sectionalview of a part of the end of the binder, taken in line 33, Fig. 1; andFigs. 4c and 5 are detail views illustrating the present improvement asapplied to a binder without the end plates of the clamping members.

Similar characters of reference indicate corresponding parts throughoutthe figures of the drawings.

, This improved binder comprises a back made up of a pair ofsubstantially L-shaped reciprocating clamping or side members 2 and 3and a supporting or back plate 4, usually of curved formation. The backplate is provided with ears or lugs 5 for the reception of an operatingrod 6 having right and left hand threads carrying threaded nuts 7 toeach of which is pivoted a pair of toggle levers 8, the opposite ends ofwhich are pivoted to the clan'iping plates 2 and 3. These clampingplates are provided alternately with a horizontally extending tube 9 anda rod 10, the tubes of the clamping plate on one side being adapted toreceive the rods on the clamping plate on the opposite side, and the rod6 being adapted to be turned by a key. These rods and tubes are for thereception of the leaves of the book in the usual manner.

It will be observed that the lower horizontal members 11 of the L-shapedside or clamping plates are located to move above the upper edges of thecurved back member I Specification of Letters Patent.

Application filed September 20, 1910.

Patented Feb. 28, 1911.

Serial No. 582,828.

or plate t, and heretofore it has been the practice to connect theseside clamping members by bridges or supports in order to stiffen andreinforce the structure. The object of the present improvement, however,is to do away with this bridging, which has heretofore been necessary,and to properly guide the clamping plates as well as reinforce andstiffen the structure through the medium of the ends of the back member,and for this purpose it will be observed that the back is provided ateach end thereof with an upstanding portion or plate 12 having aninturned flange 13 adapted to project over the horizontal portions ofthe L-shaped clamping plates and so guide the same in their movement toand fro through the medium of the threaded rod. This overturned edge orflange also reinforces the structure and prevents unnecessary play ofthe clamping plates. In the preferred form thereof,

however, it will be observed that each of the clamping plates isprovided at each end thereof with an end plate 14:, having adjacent toits bottom and just above the horizontal members of the clamping platesa slot 15 in which the overturned or flanged portion of the end platesof the back member extend, thus materially reinforcing as well aseffectively guiding the clamping plates in their reciprocatory movementthrough the medium of the threaded rod, in a manner which will bereadily understood.

Heretofore, in order to properly guide the side clamping members, it hasbeen neces sary, as stated, to use bridge plates located between theends of the back, and these bridge plates either had to be riveted tothe back or screwed thereto so that theclamping plateswould be properlyguided. lVhen riveted the structure was apt to be too stiff, as thebridge plates would be secured too tight to the back member, and whenthe bridge plates were secured by screws these tended to work loose; sothat, aside from the cost of manufacturing the structure in this manner,there were several disadvantages in using this style of bridge plate. Bymeans of the present improvement, however, the expense of manufacture isreduced, while a much more durable means is provided for guiding theside clamping plates, as the present improved means prevents improperplay or looseness of the side plates, which was frequently the case whenbridge plates were used screwed to the back plate. By means of thepresent improvement also the end portions or plates of the back platemay be formed integral 1 with such plates, so that the inturned flangesor portions may be made all in one piece with the back plate.

I claim as my invention:

1. In a binder, the combination of a pair of movable side members and aback member, said side members having end plates, said end plates andback member having at the ends of said back member co-acting means forguiding the side members, comprising slots and inturned flanges workingtherein.

2. In a binder, the combination of a pair of movable side members and aback member, said side members having end plates provided with slots andthe back member having an inturned flange located in said slots.

3. In a binder, the combination of a pair of movable side clampingmembers having inwardly extending horizontal bottom portions, and a backmember located below said bottom portions and having at each end anupstanding plate terminating at the ends of said horizontal bottomportions and provided with an inturned flange overlapping said bottomportions of the clamping members for guiding the same, said back platecarrying means for operating said clamping members.

at. In a binder, the combination of a pair of L-shaped movable sidemembers, and a curved back member located below the horizontal portionsof the movable side members, said back member having integral ends eachhaving an inturned flange overlapping the horizontal portions of theside movable members and said s ide movable members having end platesextending over the flanges of the back member and forming slots betweenportions of the side movable members for such back member flange.

5. In a binder, the combination of a pair of movable side clampingmembers, and a back member located below said side clamping members andhaving at each end an upstanding plate provided with an inturned flangeoverlapping a portion of the ends of said side clamping members, andsaid clamping members each having at each end an end plate with a partof each overlapping said inturned flange whereby the said members areguided by the flange.

THOMAS E. EDDY.

Witnesses NAPOLEON STUART, C. L. TREAT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

